Ventilator



April 16, 1929. c w s 1,709,295

VENT ILATOR Filed March 1, 1928 Patented Apr. 16, 1929.

UNITED STATES PATENT OFFICE.

CHARLES M. WILLS, F ATLANTIC CITY, NEYV JERSEY, ASSIGNOR TO THE AIv/[ERICAN TRANSOM (30., INC, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF DELAWARE.

VENTILATOR.

My invention relates to ventilators and reiers particularly to ventilators through which vision is always impossible and through which the passage and non-passage oi air and light are controllable.

lVhile-the passage or non-passage of air through ventilators is of prime importance, it is also equally desirable that sight therethrough should be impossible.

My invention presents a simple and effective means for accomplishing these advantageous results and is adaptable for doors or transoms.

The device of my invention comprises among other elements a closure means whereby air, light and dust may be eiiectively prevented from passing therethrough by means of abutment between the closure means and the wings of the device, thus completely closing the openings through which these elements pass when the device is in open position.

Further, it is of such construction that vision through it is always effectively prevented.

In the accompanying drawings illustrating one form of the device of my invention, similar carts are designated by similar numerals.

Figure 1 illustrates one form of my device installed in the upper portion of a door.

Figure 2 is a vertical cross-section of one form of device.

Figure 3 is a section through the line 33 of Figure 2 showing the device in closed position.

Figure a is a section similar to Figure 3 showing the device in open position.

The particular form of the device of my invention comprises a casing composed of a top channel member 10, a bottom channel member 11 and the end channel members 12 and 13. The sides of the device consist of the plates 14 and 15 having longitudinally spaced inwardly inclined wings 16, 16, the extremities of the wings of one side being spaced from the extremities of the wings of the other side.

Between the wings of the two sides and ex tending between the ends of the device and between its top and bottom is a movable closure member 17 having a plurality of vertical openings 18, 18, therein.

The openings 18, 18 of the closure member 17 are positioned in alignment with the side plates 14 and 15 and staggered with respect to the openings between the wings 16, 16,

in such a manner that when the closure member 17 is brought into abutment with the wings 16, 16-01? either side, the openings between thewings will be closed preventing sight and the passage or" air through the de vice as shown in Figure 3, and that when the closure member 17 is spacec. from the wings air will pass through the device but vision will be prevented therethrough as shown in Figure 4.

The illustrated means for moving the closure member 17 into open and closed position consists of oppositely positioned rods 19, 19, havin the fixedly attached operating members 20, 2O exterior of the device, the interior extremity of each rod 19, 19, being attached to the closure member 17.

Each rod 19 carries a revoluble pinion 21 meshed with a rack 22 carried by an end member of the device. Each rod 19 also carries a stop collar 23, limiting its outward movenent.

Two guide rods 24, 24:, pass through openings in the upper portion of the closure member 17 and are aflixed to upper portions of the sides 14 and 15.

The operation of the device is as follows WVhen the device is in the position shown in Figure 4-, air can pass therethrough although sight is not possible through the device.

hen it is desired to close the device from the passage of air and light, the rods 19, 19, are moved inwardly, thus bringing the closure member 1.7 into abutment with the wings 16, 16 of the side let.

My device, therefore, presents an inexpensive and effective ventilator through which sight is always impossible and through which the passage or non-passage of air and light may be easily controlled.

I do not limit myself to the particular size, shape, number or arrangement of parts as shown and described, as these are given simply as a means for clearly describing the device of my invention.

What I claim is 1. In a visionless ventilator, in combination, a casing; two parallel sides to the easing having a plurality of openings therein;

a plurality of inwardly extended wings carried by the marginal edges of said openings; a vertically positioned horizontally movable closure between the two sides having a plurality of openings therein, said openings being staggered with respect to the side openings and means eXterior of the casing for moving said closure into abutment with the wings of one side, whereby the openings in said side will be closed.

2. In a visionless ventilator, in combination, a casing; two parallel sides to the cashaving a plurality of openings therein; a plurality of inwardly extended wings carried by the marginal edges of said openings; a vertically positioned horizontally movable closure between the two sides having a plurality of openings therein, said openings being staggered with respect to the side openings, guiding means for said closure between said res and means exterior of the casing for moving said closure into abutment with the wings of one side, whereby the openings in said side will be closed.

3. In a visionless ventilator, in combination, a casing; two parallel sides to the easing having a plurality of openings therein; a plurality of inwardly extended wings carried'by the marginal edges of said openings; a vertically positioned horizontally movable closure between the two sides having a plurality of openings therein said openings being so positionoe that ai, will pass through the device when said. closure is not in abutment with the wings of one side and will be prevented from passage therethrongli when said closure in abutment with the wings of said side, guiding means for said closure between said sides and means exterior of the casing t'or ni ving said closure.

Signed at New York city in the county of New York and State of New York this 7th day of February, 1928. 7

CHARLES M. WILLS. 

